His character sunk on every review of it; and as a punishment for him, as well as a possible advantage to Jane, she seriously hoped he might really soon marry Mr. Darcy's sister, as by Wickham's account, she would make him abundantly regret what he had thrown away. -- Chapter 26

Elizabeth finds it amusing to match Bingley to less than perfect wife. What she has heard of Miss Darcy is that she is "very, very proud" and less than amiable -- the opposite of the good natured Jane.

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"I like her appearance," said Elizabeth, struck with other ideas. "She looks sickly and cross. Yes, she will do for him very well. She will make him a very proper wife." Chapter 28